<html>
<head>
	<title></title>
	<script type="text/javascript" src='../src/jquery.js'></script>
<script type="text/javascript">
Number.prototype.formatMoney = function (c, d, t) {
	var n = this,
		c = isNaN(c = Math.abs(c)) ? 2 : c,
		d = d == undefined ? "," : d,
		t = t == undefined ? "." : t,
		s = n < 0 ? "-" : "",
		i = parseInt(n = Math.abs(+n || 0).toFixed(c)) + "",
		j = (j = i.length) > 3 ? j % 3 : 0;
	return s + (j ? i.substr(0, j) + t : "") + i.substr(j).replace(/(\d{3})(?=\d)/g, "$1" + t) + (c ? d + Math.abs(n - i).toFixed(c).slice(2) : "");
 };
	$(function () {
		$('#price').keyup(function(){
			num = $('#price').val();
			$('#mydiv').text(parseInt(num).formatMoney(2, '.', ','));
		});

	});
</script>
</head>
<body>
	<div id='mydiv'></div>
	<input type='text' id='price' placeholder='write here'/>
</body>
</html>